Junior Learning JL646 Food Fractions Magnetic Resource, Multicolor

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All aboard the fraction train! Let us explore the numerator and denominator, the two essential parts of a fraction. · The Numerator Navigates

We are learning about halves and quarters so that we can understand how things can be split into smaller parts. Bilsborough S, Mann N (2006) A review of issues of dietary protein intake in humans. International Journal of Sport Nutrition and Exercise Metabolism 16: 129–152. Since transport emissions are typically small, and the differences between foods are large, what types of food we eat matter much more than how far it has traveled. Locally-produced beef will have a much larger footprint than peas, regardless of whether it’s shipped across continents or not. Let us start with cupcakes! Suppose we have six cupcakes and want to share them equally among three friends. How many cupcakes will each friend get? To find out, we divide the total number of cupcakes (6) by the number of friends (3). So, each friend gets 2 cupcakes. We can represent this as 6/3 or simply as 2. · The Cookie Crusade Allen LH, Oddoye EA, Margen S (1979) Protein-induced hypercalciuria: a longer term study. American Journal of Clinical Nutrition 32(4): 741–749.Fractions are a way of expressing numbers that represent parts of a whole. They consist of two numbers: a numerator and a denominator. The numerator represents the number of parts we have. At the same time, the denominator tells us the total number of equal parts in the whole. For example, if we have one out of four equal parts, we write it as 1/4. Food Fractions: The Fraction Bakery – Dividing Delicious Treats! I particularly struggle with this style of teaching when the concept is very abstract. Right now, our team is introducing fractions, and I can’t tell you how difficult this is for third graders. The reason that transport accounts for such a small share of emissions is that most internationally traded food travels by boat, not by plane. Very little food is air-freighted; it accounts for only 0.16% of food miles. 12 For the few products which are transported by air, the emissions can be very high: flying emits 50 times more CO 2eq than boat per tonne kilometer.

The idea of shading in boxes and naming fractions of symbols was so abstract that students had nothing to connect it to. It was actually making me crazy. The idea of doing it with 30 problems on a worksheet made me even crazier!Phillips DL, Gregg JW (2003) Source partitioning using stable isotopes: coping with too many sources. Oecologia 136(2): 261–9. Unlike adding and subtracting integers such as 2 and 8, fractions require a common denominator to undergo these operations. One method for finding a common denominator involves multiplying the numerators and denominators of all of the fractions involved by the product of the denominators of each fraction. Multiplying all of the denominators ensures that the new denominator is certain to be a multiple of each individual denominator. The numerators also need to be multiplied by the appropriate factors to preserve the value of the fraction as a whole. This is arguably the simplest way to ensure that the fractions have a common denominator. However, in most cases, the solutions to these equations will not appear in simplified form (the provided calculator computes the simplification automatically). Below is an example using this method. a

Half of the world’s habitable land is used for agriculture. Habitable land is land that is ice- and desert-free.So I came up with a series of activities that would allow them to explore fractions with one of their favorite things: Food! (OK, I will admit it is my favorite thing, too.) Next, we came up with equivalent fractions. For example, it is easy to see that there are two pieces of Kit Kat in each group. We discussed (and I showed them) that an equivalent fraction would be two fourths. Producing 100 grams of protein from beef emits 25 kilograms of carbon dioxide-equivalents (CO 2eq), on average. But this ranges from 9 kilograms to 105 kilograms of CO 2eq – a ten-fold difference. FRUITS is capable of providing accurate and precise estimates on food intake. Nevertheless, this requires that several conditions are met, namely, the proposed dietary scenarios approximate the real scenario, the identified food groups should have significantly different chemical signatures, and the selected dietary proxies are in sufficient number to offer the possibility of separating the contributions of the different food groups. This implies that there is a good knowledge of the accessible individual foods and of their corresponding fraction composition and chemical signatures. In some instances, individual food types having similar fraction characteristics can be aggregated into food groups and associated uncertainties should reflect this aggregation process. The number of dietary proxies, preferentially associated with distinct dietary routing mechanisms, should increase as the number of potential food groups also becomes larger. As shown in the selected real case study, model estimates benefit greatly from the use of prior information on expected ranges or relative intakes of food groups or fractions. However, the user should be certain that the priors chosen are based on well-founded knowledge. This can include research results from metabolic or physiological studies. Finally, to test the reliability of generated results it is important that model outputs corresponding to different dietary scenarios are compared to assess the degree of model sensitivity and robustness.